28 March – Saint Guntram

Annus Dierum Sanctorum
Dormierunt somnum suum, et nihil invenerunt omnes viri divitiarum in manibus suis.
They have slept their sleep; and all the men of riches have found nothing in their hands.
Psalm 75.6
Beatus, qui intelligit super egenum.
Blessed is he that understandeth concerning the needy.
Psalm 40.2

Modern Hagiography

Roman Martyrology

Lives of the Saints by Alban Butler.

Pictorial Lives of the Saints

La vie des saints 

Our Birthday Bouquet Culled from the Shrines of the Saints and the Gardens of the Poets by Eleanor C. Donnelly.

Pictorial Half Hours with the Saints by Auguste François Lecanu.

Medieval Hagiography

BHL, Supplement

Acta Sanctorum

The Cult of Saints in Late Antiquity Database

Gregory of Tours, History of the Franks

Art & Architecture

Index of Medieval Art

Portail Biblissima

POP : la plateforme ouverte du patrimoine

Warburg Institute Iconographic Database

Saints and their Attributes

The Saints in Art by Joseph Maria von Radowitz.

Emblems of Saints by Which They Are Distinguished in Works of Art by F. C. Husenbeth.